/**
 *
 * @param fn Accepted argument and return, a function.
 * @param ms The delay time.
 * @returns a debounced function that resolves to a value after certain amount of time. Or never resolves if terminated.
 */
export declare const useDebounce: <A = unknown, R = void>(fn: (args: A) => R, ms: number) => (args: A) => Promise<R>;